Means for bonding rails.



F. C. LAVARACK.

MEANS FOR BONDING RAILS.

APPLICATION FILED JAN-8.19M

1,267,673. Patentd May 28; 1918.

Wzzesses.

for double bon larl when greatcare is not exercis worhngzm driving it.

FREDERICK C. LAVARACK, 0F ORANGE, NEW JERSEY.

- MEANS FOR BONDING RAILS.

Application filed January 8,

.To all whom it may concern:

Be it known that I, FREDERICK C. Lava- RACK, a subject of Great Britain, residing at Orange, in the countylof Essex and State of New Jersey, have invented sin-Improvement in Means for Bonding Rails, of which the following is a specification.

This invention relates to improved means g rails for railway signal work. Hereto'fore -so 'far as I am aware, when two bonds are employedfor bondin rails for railwa signal work, separate bond in means sue as bondin -pms are provi ed for each bond the bonding-pins being arranged side by side in a horizontal plane, and eaehbond-wire extends from the outermost pin at one end to the innermost pin at the other end, so that the bond-wires are quite long althou h of the same length.

Furthermore, e usual bonding-pin has a groove at one side for'the wire and when the pinfis driven into the hole in the rail, with the wire or support for the pin 15 unequal, and as a resu t, it frequently tips and bends when struck with a sledge, and is ruined, tiff/l0):-

y t e In rdancewith invention I em- 'loy t o orImQrebQndMires-of'the same gth, sues-wh ms bemade shorter en than the bond-, usually employed, and secure all of the wires at one end to one of the rails by a single bonding-pin and all of the wires at .the other end to the otherrail by a single bonding-pin; and said bonding- .pins have side grooves preferablyequidistantly disposed to receive the ends of the bond-wires so thatan equal support isproin the holes, thereby envided for the pins I abling them to be driven info the holes with less liability of tipping or bending, even by a careless wor 11. As but a sin is bondingpin is employed ior each end 0 the plurality of bond-wires the expensejof securing the bond wires to the rails is considerabl less than the in rails, the reduction being both in materiaIl and labor. h b d] kmg I amawaret at roa "spea as' e attaching means for each end of a pluria lity; of bond-.wires'has been sug but my invention, is contrasted therewith in that my single attachin means consists of a le element, which itself is adapted to be driven Specification of Letters Patent.

in said groove, the

plugs or pins having, as he rail, one end of are arranged in the side present method of double bon Patented May 2s, 1.918.

1914. Serial No. 810,974.

into the hole in the rail and is held therein by friction only.

Figure 1 represents in side elevation the adjacent end-portions of two rails with bonding-means embodying this invention.

Fig. 2 is a side elevation, and r 'g. 3 a longitudinal transverse section of one of the bonding-pins Figs. 4 and 5 are views illustrating the method of securing the ends of the bondwires to the rails by my improved bonding means.

10, 10 represent the adjacent two rails which are or may be 0 any usual or Suitable construction. A single 0 lindrical hole 12 is drilled through the we 15 of each rail to receive a bonding-pin and one of the ends of all of the bond-wlres. 18

ortions of F and 20 represent two bond-wires althou h a eater number may-be employed if esirfi, which are of the same length, and which can be made shorter than the bondwires usually employed. 25 represents one of the tape bondingre gfiown, two grooves 26 28, at its sides, which are extended throughout its len th, and of suitable size to receive .the on of the bond-wires. These grooves are preferably e uidistantly disposed with respect to each other, so that an equal support is provided for the pin when placed in the hole in the rail, and while being driven in, thus preventing its; om easily tip ing or bending when struck by the sledge. s an il ustration of the manner of attaching the en 3 of both bond-wires to a each bond-wire is projected through the hole in the rail and said ends grooves in the pin and the in is then thrust or started into the hole b and, as represented in Fig. 4, and then t e exposed or outer end of the pin is struck one or 'more heavy blows with a sledge driving it into the hole, as represented in Fig. 5, thereby firmly securing it and the wires in place by friction.

The reason that the bond-wires herein employed can be made shorter than the bondwires usually employed is that the sin 1e bonding-pins are disposed in substantia y the same laces in the rails as are the innermost bon ingiris of the uspal arrangement of double bonding-pins.

In addition to the reduction in cost incident to the employment of single bondingpins and shorter bond-wires than those usually employed, there is a substantial reduction in the cost of drilling, as herein but two holes are drilled in the rails instead of four, thus saving time and labor; and on account of the bonding-pins being slightly larger in diameter than those usually employed, larger drills are employed for drilling the holes in the rails and the liability of breakage is correspondingly reduced, thus resulting in a considerable saving.

The bonding-pins here shown are substantially the same as form the subject-matter of my application #796,715, filedOetous her 22, 1913 to which reference may be had. Iclaim':- A bonding pin for use in connecting the terminals of a plurality of bonding wi es to rails coniprisin lnpes'wl h lu'ly firmed with (llll(lull1'lClTl}'-0[)])0Et i wire FLI I(;J".4IQ grooves of uniform depth throughout u parallel with the tapered surface of: the pin two subscribing witnesses.

FREDERICK C. LAVARAQK.

Witnesses:

A. M. LINDENSTRUTH, Gno. J. Gnu. 

